| 简介 |
PROBLEM TO BE SOLVED : To provide a motor and a generator including a permanent magnet in which squareness is enhanced while keeping high magnetization and coercive force of a Sm-Co-based magnet containing Fe, and to provide a motor car including the motor or generator.SOLUTION : A motor or generator included in a motor car includes a permanent magnet having a composition represented by a compositional formula : R(FeMCuCo)(R : rare earth element, M : at least one kind selected from Ti, Zr and Hf, where 50 atom% or more is Zr, 0.3
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